PV

Per A. Vatne

📍 Kristiansand, NO: #4 of 34 inventorsTop 15%
Overall (2019): #131,435 of 560,194Top 25%
2
Patents 2019

Issued Patents 2019

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
10400513 Fluid pressure driven, high frequency percussion hammer for drilling in hard formations — 2019-09-03
10385617 High frequency fluid driven drill hammer percussion drilling in hard formations — 2019-08-20